Surface-structured molecular sensor for the optical detection of acidity

Alberto Martínez-Otero, Emilia Evangelio, Ramon Alibés, José Luis Bourdelande, Daniel Ruiz-Molina, Félix Busqué, Jordi Hernando

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

Abstract

In this letter, we report on the development of a surface molecular sensor for the detection of acidity. Lithographically controlled wetting deposition has been applied to form the nanostructure of a new fluorescent compound with three protonation states featuring different optical properties on a glass substrate. Atomic force microscopy demonstrates the functionalization of fee surface with ordered arrays of the sensor molecules. The fluorescence properties of the resulting nanopattern at different pH values have been investigated by confocal fluorescene microsopy, thus revealing the fast, sensitive, reversible response of the prepared nanosensor to gas flows of varying acidity. © 2008 American Chemical Society.
Original languageEnglish
Pages (from-to)2963-2966
JournalLangmuir
Volume24
Issue number7
DOIs
Publication statusPublished - 1 Apr 2008

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